Malicious PDF / .PHP — malware analysis report

Static analysis result for SHA-256 56b6ea88f96b5330…

MALICIOUS

PDF / .PHP

14.5 KB Created: 2009-11-15 19:41:70 Authoring application: PDF Library 4.3.9 (via PDF Library 3.9.7)
MD5: 45a3d623bb1abaf5de05f0f2c9925077 SHA-1: 02133db83e80830ddc76a94782071dbf281ce09c SHA-256: 56b6ea88f96b53301582f3ce922650412d527fa174f4035fcc75a0e618abf3eb
136 Risk Score

Malware Insights

MITRE ATT&CK
T1059.001 PowerShell T1566.001 Spearphishing Attachment

The PDF file was detected as malicious by ClamAV with the signature Win.Trojan.Agent-36166. Static analysis revealed embedded JavaScript, indicating a likely attack pattern involving the execution of malicious code. The JavaScript's purpose is presumed to be downloading and executing a second-stage payload, which is a common technique for malware delivery. The confidence is moderate due to the lack of specific script content analysis.

Heuristics 4

  • ClamAV: Win.Trojan.Agent-36166 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Win.Trojan.Agent-36166
  • ClamAV detection on extracted artifact critical EXTRACTED_FILE_CLAMAV
    ClamAV flagged at least one file extracted from inside this sample. Even when the wrapping document carries no AV detection of its own, a hit on the carved artifact is a strong indicator the sample is a delivery vehicle.
  • JavaScript action low PDF_JAVASCRIPT
    PDF contains a /JavaScript action. Generic JavaScript is common in benign forms; specific dangerous APIs are scored by separate rules.
  • Embedded JS stream low PDF_JS
    PDF references a /JS stream. Generic JavaScript is common in benign forms; specific dangerous APIs are scored by separate rules.

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
javascript_obj0007_000.js
d67fa7d2189b97586098625c5c918eb7e179cbbc0c5ccd09899fca368696d0fe		 pdf-javascript-stream PDF /JS object 7 at offset 0x1A5 75110 bytes
Detection
ClamAV: Win.Trojan.Agent-36166
Obfuscation or payload: unlikely

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